CN105968655A - High-temperature-resistant PVC pipe - Google Patents
High-temperature-resistant PVC pipe Download PDFInfo
- Publication number
- CN105968655A CN105968655A CN201610591850.2A CN201610591850A CN105968655A CN 105968655 A CN105968655 A CN 105968655A CN 201610591850 A CN201610591850 A CN 201610591850A CN 105968655 A CN105968655 A CN 105968655A
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- CN
- China
- Prior art keywords
- parts
- acm
- titanium dioxide
- pvc
- pvc pipe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/53—Core-shell polymer
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-temperature-resistant PVC pipe which is prepared from, by weight, 100 parts of PVC resin, 5-10 parts of titanium dioxide and 1-3 parts of ACM. Compared with the prior art, the titanium dioxide and ACM are added to a PVC base body, tensile strength and impact-resistant strength can be greatly improved, and high temperature stability is improved.
Description
Technical field
The present invention relates to a kind of pvc pipe, be specifically related to high temperature resistant PVC pipe.
Background technology
As far back as generation nineteen fifty, abroad just PVC (polrvinyl chloride) pipe is researched and developed, and will
Pvc pipe is widely used in indoor and outdoor feedwater piping.Since nineteen sixty, China starts to make in water engineering
With pvc pipe, pvc pipe good physical properties, there is good corrosion resistance, chemical stability and resistance to combustion
Property etc., and cheap.PVC intermolecular force is very strong, is produced by material after low-temperature impact power
Deformation, molecular structure is more easily damaged, and causes pvc pipe impact resistance poor, especially cold temperature impact
Can be particularly poor.The fusion temperature of PVC and decomposition temperature very close to, differ less than 5 DEG C, if it directly being used
In Product processing molding, meeting Direct Resolution when molten condition, heat stability is poor.PVC material is not
The poor shortcoming of high temperature resistant and shock resistance defines that polyvinyl chloride resin is at engineering structure structure to a certain extent
The application of the aspects such as part.In order to improve the shock resistance of polyvinyl chloride resin, conventional method is to PVC matrix
Middle addition toughener, toughener can reduce PVC intermolecular force, therefore can improve PVC composite
Impact strength.But the addition of plasticizer is difficult to precisely hold, and plasticizer is low molecular compound,
If addition is inadequate, plasticizer can not be well soluble in matrix, it may occur that evolution reaction, and processed
The plasticizer separated out in journey can be heated volatilization, in turn reduction PVC material toughness；If adding too much plasticising
Agent, the intermolecular force of composite reduces further so that it is intensity and toughness declines to a great extent.Solve heat
The method of poor stability is usually to use adds stabilizer, improves the high-temperature stability of polyvinyl chloride resin, prevents
High temperature degradation.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of high temperature resistant PVC pipe, and this feed pipe is by PVC
Adding composite modification material in matrix, be greatly enhanced hot strength and impact strength, high-temperature stability is also
Increase.
The technical scheme that the present invention provides is a kind of high temperature resistant PVC pipe, including the component system of following weight portion
Become: polyvinyl chloride resin 100 parts, titanium dioxide 5～10 parts, ACM 1～3 parts.
Titanium dioxide, is TiO2, there is resistance to elevated temperatures, titanium dioxide grain surface exists with chemical bond side
Hydroxyl that formula combines and the moisture that adsorbed by physics mode, so, titanium dioxide is hydrophilic, but it
Water-based system can not disperse automatically, and disperse more difficult in nonaqueous systems.Titanium dioxide and PVC
Immiscible, titanium dioxide directly mixes with PVC, can produce the interface that adhesive property is poor.ACM is slight
, there is a number of chlorine atom in the HDPE of chlorination and the IPN copolymer of acrylate, its composition is slight
Chlorination HDPE and acrylate shell act on jointly, make ACM structurally close with PVC, and have
Identical polar group, both compatibilitys are good.The additionally nucleocapsid structure of acrylate, shell affects rubber
The dispersion of glue phase and the bonding force with PVC interface, can be as the intermediate medium of titanium dioxide Yu PVC, and gently
Degree chlorination HDPE is good with the PVC compatibility, and therefore, the compatibility of ACM PVC system is preferable.Slightly
Under the comprehensive function of chlorination HDPE and Polyacrylate Core-Shell Structured Compounded base polymer, ACM and titanium dioxide/PVC interface shape
Become network structure, therefore on the basis of keeping intensity, improve PVC composite material toughness largely.Separately
On the one hand, titanium dioxide is a kind of polycrystalline compounds, and its particle is regularly arranged, has grid system, titanium
The network structure generation IPN that the grid system of white lead is formed with titanium dioxide/PVC interface with ACM, forms that
Between this, the more firm physical network connected, is greatly improved intensity and the toughness of composite.
Owing to the interpolation of titanium dioxide and ACM changes the internal structure of PVC, define firm network knot
Structure, so that composite is not easy to decompose under the hot conditions of 200 DEG C.
As preferably, the weight portion of each component is: polyvinyl chloride resin 100 parts, titanium dioxide 6～8 parts, ACM 1～
1.5 part.
In order to further enhance heat stability, also include the stabilizer of 0.1～10 weight portions.
Described stabilizer is rare-earth stabilizer or calcium zinc stabilizer.Described rare-earth stabilizer be rare-earth stearate,
Fatty acid rare earth, salicylic acid rare earth, citric acid rare earth.Described calcium zinc stabilizer is conventional liquid calcium zinc
Stabilizer.
The degree of polymerization of described polyvinyl chloride resin is 800～2000.
The preparation method of the high temperature resistant PVC pipe of the present invention is as follows:
1) by polyvinyl chloride resin, titanium dioxide, ACM, stabilizer (have and just add, be the most just not added with), at a high speed
Blender premixes, cooling, obtain premix material；
2) by premix material torque rheometer at 160～180 DEG C, molten under conditions of rotating speed 40～80rpm
Melt mixing 2～10min, obtain composite.
3) composite being sent into double screw extruder, screw speed is 100～120rpm, barrel zone temperature
Arrange: feed section 160～175 DEG C, fluxing zone 170～180 DEG C, head temperature is 180～195 DEG C and goes out
Material, is high temperature resistant PVC pipe.
Compared with prior art, the present invention with the addition of titanium dioxide and ACM in PVC matrix, can be significantly
Significantly, high-temperature stability also increases for hot strength and impact strength.
Detailed description of the invention
The present invention is further elaborated for specific examples below, but not as a limitation of the invention.
Embodiment 1
Formula: the degree of polymerization be 800 polyvinyl chloride resin 100 parts, titanium dioxide 5 parts, ACM 1 part.
1) by polyvinyl chloride resin, titanium dioxide, ACM, premix in homogenizer, cooling, premixed
Material；
2) by premix material torque rheometer at 160 DEG C, under conditions of rotating speed 40rpm melting mixing 2～
10min, obtains composite.
3) composite being sent into double screw extruder, screw speed is 100rpm, and barrel zone temperature is arranged:
Feed section 160 DEG C, fluxing zone 170 DEG C, head temperature is 180 DEG C, and discharging is high temperature resistant PVC pipe.
Embodiment 2
Formula: the degree of polymerization be 2000 polyvinyl chloride resin 100 parts, titanium dioxide 10 parts, ACM 3 parts.
1) by polyvinyl chloride resin, titanium dioxide, ACM, premix in homogenizer, cooling, premixed
Material；
2) by premix material torque rheometer at 180 DEG C, melting mixing 10min under conditions of rotating speed 80rpm,
Obtain composite.
3) composite being sent into double screw extruder, screw speed is 120rpm, and barrel zone temperature is arranged:
Feed section 175 DEG C, fluxing zone 180 DEG C, head temperature is 195 DEG C, and discharging is high temperature resistant PVC pipe.
Embodiment 3
Formula: the degree of polymerization be 1500 polyvinyl chloride resin 100 parts, titanium dioxide 6 parts, ACM 1.5 parts.
1) by polyvinyl chloride resin, titanium dioxide, ACM, rare-earth stearate, premix in homogenizer, cold
But, premix material is obtained；
2) by premix material torque rheometer at 170 DEG C, melting mixing 8min under conditions of rotating speed 60rpm,
Obtain composite.
3) composite being sent into double screw extruder, screw speed is 110rpm, and barrel zone temperature is arranged:
Feed section 170 DEG C, fluxing zone 175 DEG C, head temperature is 190 DEG C, and discharging is high temperature resistant PVC pipe.
Embodiment 4
Formula: the degree of polymerization be 1000 polyvinyl chloride resin 100 parts, titanium dioxide 8 parts, ACM 1 part.
1) by polyvinyl chloride resin, titanium dioxide, ACM, liquid calcium zinc stabilizer, premix in homogenizer,
Cooling, obtains premix material；
2) by premix material torque rheometer at 160 DEG C, melting mixing 2min under conditions of rotating speed 80rpm,
Obtain composite.
3) composite being sent into double screw extruder, screw speed is 120rpm, and barrel zone temperature is arranged:
Feed section 160 DEG C, fluxing zone 180 DEG C, head temperature is 180 DEG C, and discharging is high temperature resistant PVC pipe.
Reference examples 1
Formula: the degree of polymerization is polyvinyl chloride resin 100 parts, the ACM 1 part of 1000.
1) by polyvinyl chloride resin, titanium dioxide, ACM, liquid calcium zinc stabilizer, premix in homogenizer,
Cooling, obtains premix material；
2) by premix material torque rheometer at 160 DEG C, melting mixing 2min under conditions of rotating speed 80rpm,
Obtain composite.
3) composite being sent into double screw extruder, screw speed is 120rpm, and barrel zone temperature is arranged:
Feed section 160 DEG C, fluxing zone 180 DEG C, head temperature is 180 DEG C, discharging, is modified PVC feedwater
Pipe.
Reference examples 2
Formula: the degree of polymerization is polyvinyl chloride resin 100 parts, the ACM 3 parts of 1000.
1) by polyvinyl chloride resin, titanium dioxide, ACM, liquid calcium zinc stabilizer, premix in homogenizer,
Cooling, obtains premix material；
2) by premix material torque rheometer at 160 DEG C, melting mixing 2min under conditions of rotating speed 80rpm,
Obtain composite.
3) composite being sent into double screw extruder, screw speed is 120rpm, and barrel zone temperature is arranged:
Feed section 160 DEG C, fluxing zone 180 DEG C, head temperature is 180 DEG C, discharging, is modified PVC feedwater
Pipe.
Reference examples 3
Formula: the degree of polymerization is polyvinyl chloride resin 100 parts, the ACM 5 parts of 1000.
1) by polyvinyl chloride resin, titanium dioxide, ACM, liquid calcium zinc stabilizer, premix in homogenizer,
Cooling, obtains premix material；
2) by premix material torque rheometer at 160 DEG C, melting mixing 2min under conditions of rotating speed 80rpm,
Obtain composite.
3) composite being sent into double screw extruder, screw speed is 120rpm, and barrel zone temperature is arranged:
Feed section 160 DEG C, fluxing zone 180 DEG C, head temperature is 180 DEG C, discharging, is modified PVC feedwater
Pipe.
By embodiment 1～4 and the feed pipe of reference examples 1～3 carry out performance detection, result see table:
Claims (5)
1. high temperature resistant PVC pipe, it is characterised in that: include that the component of following weight portion is made: PVC
Resin 100 parts, titanium dioxide 5～10 parts, ACM 1～3 parts.
High temperature resistant PVC pipe the most according to claim 1, it is characterised in that: the weight of each component
Amount part is: polyvinyl chloride resin 100 parts, titanium dioxide 6～8 parts, ACM 1～1.5 parts.
High temperature resistant PVC pipe the most according to claim 1 and 2, it is characterised in that: also include
The stabilizer of 0.1～10 weight portions.
High temperature resistant PVC pipe the most according to claim 3, it is characterised in that: described stabilizer
For rare-earth stabilizer or calcium zinc stabilizer.
High temperature resistant PVC pipe the most according to claim 1 and 2, it is characterised in that: described
The degree of polymerization of polyvinyl chloride resin is 800～2000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610591850.2A CN105968655A (en) | 2016-07-26 | 2016-07-26 | High-temperature-resistant PVC pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610591850.2A CN105968655A (en) | 2016-07-26 | 2016-07-26 | High-temperature-resistant PVC pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105968655A true CN105968655A (en) | 2016-09-28 |
Family
ID=56950786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610591850.2A Pending CN105968655A (en) | 2016-07-26 | 2016-07-26 | High-temperature-resistant PVC pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105968655A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585401A (en) * | 2012-03-13 | 2012-07-18 | 山东国塑科技实业有限公司 | Production method of PVC (polyvinyl chloride) threading pipe with high impact resistance |
| CN102827439A (en) * | 2012-09-24 | 2012-12-19 | 安徽康嘉塑胶建材有限公司 | PVC (Polyvinyl Chloride)-M (Modified) shock-resistant tubular product |
| CN104292692A (en) * | 2014-09-23 | 2015-01-21 | 明光旭升科技有限公司 | Insulating bush suitable for electricians |
-
2016
- 2016-07-26 CN CN201610591850.2A patent/CN105968655A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585401A (en) * | 2012-03-13 | 2012-07-18 | 山东国塑科技实业有限公司 | Production method of PVC (polyvinyl chloride) threading pipe with high impact resistance |
| CN102827439A (en) * | 2012-09-24 | 2012-12-19 | 安徽康嘉塑胶建材有限公司 | PVC (Polyvinyl Chloride)-M (Modified) shock-resistant tubular product |
| CN104292692A (en) * | 2014-09-23 | 2015-01-21 | 明光旭升科技有限公司 | Insulating bush suitable for electricians |
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Application publication date: 20160928 |